spice-vdagent path traversal

Summaryinfo

A vulnerability identified as critical has been detected in spice-vdagent. This affects an unknown part. Performing a manipulation results in path traversal. This vulnerability is reported as CVE-2026-57966. The attack requires a local approach. No exploit exists.

Detailsinfo

A vulnerability classified as critical has been found in spice-vdagent (affected version not known). This affects some unknown functionality. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A path traversal vulnerability was found in spice-vdagent. This flaw allows a malicious or compromised SPICE host to write arbitrary files to any location on the guest operating system. This occurs because the filename provided by the SPICE host during file transfers is not properly sanitized before being used. An attacker could exploit this to write to sensitive locations with the privileges of the spice-vdagent process, typically the logged-in user. This issue requires the SPICE host to be untrusted or compromised for exploitation.

It is possible to read the advisory at access.redhat.com. This vulnerability is uniquely identified as CVE-2026-57966 since 06/26/2026. The exploitability is told to be easy. Attacking locally is a requirement. Additional levels of successful authentication are required for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Name

• spice-vdagent

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CPE 2.2info

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